Water Intake Weight
Calculator
Results
- Water intake (mL/day)
- 2,990
- Water intake (L/day)
- 2.99
- Cups of water (250 mL each)
- 11.96
Nutrition results
| Water intake (mL/day) | 2,990 |
| Water intake (L/day) | 2.99 |
| Cups of water (250 mL each) | 11.96 |
formula-map diagram
- Water intake (mL/day)
- 2,990
- Water intake (L/day)
- 2.99
- Cups of water (250 mL each)
- 11.96
Nutrition formula map
Formula
mL = body weight kg × 35 mL/kg + exercise minutes × 12 mL/min= 2990
Note
Simplified nutrition model using standard reference constants (protein and carbohydrate 4 kcal/g, fat 9 kcal/g, alcohol 7 kcal/g, 1 kg of body fat about 7700 kcal, salt to sodium factor 0.393). Real energy needs and body composition changes vary between individuals. This is not medical, dietetic or nutritional advice; consult a qualified health professional before changing your diet.
More in Nutrition and diet
See all →Frequently asked questions
How is daily water intake calculated from body weight?+
The calculator typically applies a standard formula like 30-35 mL per kilogram of body weight (or roughly half an ounce to one ounce per pound), then adds an adjustment for activity level or exercise duration, since heavier body weight and more activity both increase fluid needs.
Why does a heavier person need more water than a lighter person?+
Water needs scale with body size and metabolic rate — more total body tissue, higher blood volume, and higher baseline metabolism all require more fluid to support normal physiological function, similar to how larger animals generally need more water than smaller ones.
Does this total include water from food and other beverages?+
This depends on the specific formula used — some guidelines represent total daily fluid needs including food moisture (which provides roughly 20% of intake for a typical diet), while others represent only water/beverage intake specifically, so check which the calculator assumes and adjust expectations accordingly.
Why might I need more water than the calculated baseline?+
Exercise, hot or humid climates, high altitude, pregnancy or breastfeeding, and certain illnesses (fever, vomiting, diarrhea) all increase fluid losses or needs above the sedentary baseline, so treat the calculated figure as a starting point to adjust upward under these conditions.
Is it possible to drink too much water based on this target?+
Yes, though uncommon — consuming excessive water in a short period can dilute blood sodium levels (hyponatremia), particularly during endurance exercise without electrolyte replacement, so the calculated target should be spread throughout the day rather than consumed all at once.